Wyniki wyszukiwania

1

Molecular architecture of the fusicoccin receptor

100%

Oecking C., Piotrowski M., Hagemann K.

Cellular and Molecular Biology Letters

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1997

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tom 02

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nr 2

2

14-3-3 protein interacts directly with the C-terminal region of the plant plasma membrane H -ATPase

100%

Jahn T., Fuglsang A. T., Olsson A., Bruntrup I. M., Collinge D. B., Volkmann D., Sommarin M., Palmgren M. G., Larsson C.

Cellular and Molecular Biology Letters

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1997

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tom 02

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nr 2

3

Activity of ATPases during dormancy breaking in Norway maple [Acer platanoides L.] seeds

100%

Krawiarz K., Szczotka Z.

Acta Societatis Botanicorum Poloniae

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2000

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tom 69

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nr 2

4

Equivalent circuit for Na, K - ATPase

88%

Tomicki B.

Biophysics of Membrane Transport

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1994

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tom 12

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nr 2

5

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Cucumber HMA5A and HMA5B are two tonoplast-localized homologs of Arabidopsis thaliana heavy metal ATPase HMA5 involved in cellular heavy metal homeostasis

75%

Migocka M., Papierniak A., Posyniak E.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

6

Effect of camel milk on the activities of ATPases in normal and streptozotocin-diabetic rats

75%

Al-Numair K. S., Chandramohan G., Kamalakkannan N., Alsaif M. A., Sundaraselvan G.

Polish Journal of Food and Nutrition Sciences

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2010

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tom 60

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nr 4

Diabetes mellitus is the world’s largest endocrine disorder resulting in multiple aetiologies, involving metabolic disorders of carbohydrate, fat and protein. All forms of diabetes are due to a decrease in the circulating concentration of insulin (insulin deficiency) and a decrease in the response of peripheral tissues to insulin i.e., insulin resistance. According to the World Health Organization projections, the prevalence of diabetes is likely to increase by 35% by the year 2025. In this study, the streptozotocin (STZ)-induced diabetic rats, the activities of membrane-bound adenosine triphosphatases (ATPases) are altered in erythrocytes and in tissues such as liver and kidney. Albino Wistar rats were rendered diabetic by a single intraperitoneal injection of STZ (40 mg/kg body weight). Diabetic rats exhibited significantly (p<0.05) increased levels of plasma glucose and decreased levels of plasma insulin. The activities of total ATPases, (Na++K+)-ATPase, Ca2+-ATPase and Mg2+-ATPase were significantly (p<0.05) decreased in diabetic control rats. Control and diabetic rats were treated with camel milk (250 mL/day) for a period of 45 days. A group of diabetic rats were also treated with glibenclamide (600 μg/kg body weight). After the treatment period, a significant (p<0.05) decrease in the levels of glucose and increase in the levels of plasma insulin and the activities of ATPases in erythrocytes and tissues were observed in diabetic rats treated with camel milk. A similar effect is also observed in the glibenclamide treated rats. But, control rats treated with camel milk did not show any significant (p<0.05) effect in any of the parameters studied. Our study shows that camel milk has the potential to restore the deranged activities of membrane-bound ATPases in STZ-diabetic rats. Further detailed investigation is necessary to find out its mechanism of action.

7

Rat brain Ca2plus - ATPase is a substrate for protein phosphatases PP1 and PP2A

75%

Zylinska L., Gromadzinska E., Lachowicz L.

Cellular and Molecular Biology Letters

|

1999

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tom 04

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nr 4

A possible role of serine/threonine protein phosphatases PP1 and PP2A in the regulation in vitro of the plasma membrane Ca2+-ATPase purified from rat cortical and cerebellar synaptosomal membranes was investigated. Calcium pump, the enzyme responsible for the maintenance of intracellular calcium homeostasis, is regulated by several mechanisms, including phosphorylation by protein kinases. Here we demonstrate that the protein phosphatases action decreased the activity of native Ca2+-ATPase, and increased the stimulatory effect of calmodulin. Moreover, the calcium pump dephosphorylated by PP1 and PP2A revealed the presence of the additional sites, accessible for a PKA-mediated phosphorylation. The subsequent PKA or PKC phosphorylation of the dephosphorylated cortical and cerebellar Ca2+-ATPase differentially regulated its hydrolytic activity. This study confirms that Ca2+-ATPase in nervous cell is phosphorylated in vivo, and shows for the first time that its activity may be directly regulated by PP1 and PP2A.

8

Endogenous oscillations of the transcript amounts of subunit-c of the V-ATPase of Mesembryanthemum crystallinum with harmonic frequency resonances under continuous illumination

75%

Rockel B., Blasius B., Beck F., Ratajczak R., Luttge U.

Cellular and Molecular Biology Letters

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1997

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tom 02

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nr 1

The amounts of mRNA of subunit-c (proteolipid) of the V-ATPase of mature leaves of Mesembryanthemum crystallinum L. in the state of C3-photosynthesis were analyzed for a time-series of 96 h under constant conditions in continuous light. Fourier-transform analysis of the data showed endogenous oscillations of the mRNA with period lenghts of 48, 24 and 12 h, i.e. harmonic frequency resonances.

9

Localization of calcium-dependent ATPase in germinating pollen grain and pollen tube in Vicia faba

75%

Bednarska E.

Folia Histochemica et Cytobiologica

|

1993

|

tom 31

|

nr 3

10

Does membrane fluidity depend on Na - K -ATPase activity?

75%

Walkowiak B., Koziolkiewicz W., Borkowska E., Cierniewski C. S.

Biophysics of Membrane Transport

|

1994

|

tom 12

|

nr 2

11

Erythrocyte membrane [Ca2plus plus Mg2plus]-ATPase as affected by organophosphorus insecticides

75%

Blasiak J.

Polish Journal of Environmental Studies

|

1995

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tom 04

|

nr 4

The organophosphorus insecticide bromfenvinfos (2-bromo-l-(2,4-dichlorophenyl)vinyl diethyl phosphate) and its methylated homologue methylbromfenvinfos inhibited noncompetitively the activity of (Ca2+ + Mg2+)-ATPase bound to and solubilized from pig erythrocyte membrane. Both enzyme preparations exhibited biphasic substrate curves displaying the existence of two functional active sites with low and high affinity to ATP. Inhibition of activity was more pronounced for bromfenvinfos than for methylbromfenvinfos and the solubilized enzyme preparation was more affected than the bound one. The results of the experiment suggest that the insecticides inhibited the ATPase by binding to a site on the enzyme rather than by interaction with associated lipids, although their presence could weaken the action of the compounds due to the stronger affinity of organophosphorus insecticides for lipids rather than for proteins.

12

Reducing effect of atrial natriuretic factor on Na, K-ATPase activity in rat kidney

75%

Gorny D., Korzeniowska J., Marciniak A., Pielecki J.

Journal of Physiology and Pharmacology

|

1994

|

tom 45

|

nr 1

13

Sequence analysis of ATPase domain of heat shock cognate 70 gene in non-small cell lung carcinoma

75%

Zientek H., Rusin M., Lisowska K., Pawlas M., Sieminska M., Butkiewicz D., Grzybowska E., Krawczyk Z.

Folia Histochemica et Cytobiologica. Supplement

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2001

|

tom 39

|

nr 1

14

The effect of antisense oligonucleotide treatment of plasma membrane Ca2plus-ATPase in PC12 cells

75%

Szemraj J., Kawecka I., Bartkowiak J., Zylinska L.

Cellular and Molecular Biology Letters

|

2004

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tom 09

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nr 3

Plasma membrane Ca2+-ATPase (PMCA), encoded by four separate genes, constitutes a high affinity system extruding Ca2+ outside the cell. The nerve growth factor-treated PC12 cell line possesses all four main PMCA isoforms. To evaluate the potential role of PMCA isoforms in the differentiation process, we transiently suppressed the expression of PMCA2 and 3 using the antisense oligonucleotides. In the transfected PC12 cells, we observed morphological changes, slowed neurite extension and diminished survival of the cells. The apparent transport activity and affinity of the calcium pump to Ca2+ were lower in the cells with suppressed PMCA2 and 3 isoforms than in the control cells. Moreover, in the transfected PC12 plasma membranes, the calcium pump was insensitive to stimulation by calmodulin. These findings suggest that PMCA2 and 3 isoforms may be involved in developmental and differentiation processes.

15

Thapsigargin: potent inhibitor of Ca2 transport ATP-ases of endoplasmic and sarcoplasmic reticulum

75%

Sabala P., Czarny M., Woronczak J. P., Baranska J.

Acta Biochimica Polonica

|

1993

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tom 40

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nr 3

16

Effects of thapsigargin on stimulation frequency - dependent changes in mitochondrial calcium in rat cardiac myocytes

75%

Pytkowski B., Lewartowski B.

Journal of Physiology and Pharmacology

|

2002

|

tom 53

|

nr 4,2

We investigated in the single myocytes of rat heart the effect of blocking of ATP-ase of sarcoplasmic reticulum (SR) on mitochondrial Ca2+ uptake and release. Mitochondrial Ca2+ content was investigated as Mn2+ - resistant fluorescence of Indo 1 - AM loaded into cells. SR ATP-ase was blocked with 10-6 M thapsigargin (Tg). Tg blocked almost completely stimulation Œdependent mitochondrial Ca2+ uptake and slowed down its release despite that the maximal cytosolic Ca2+ concentration was not decreased. We propose that mitochondrial stimulation -dependent Ca2+ uptake is greatly enhanced by [Ca2+ ] built by SR in microdomains adjacent to these organelle.

17

Characterization of the tonoplast proton pumps in Cucumis sativus L. root cells

75%

Kabala K., Klobus G.

Acta Physiologiae Plantarum

|

2001

|

tom 23

|

nr 1

18

Calcium in pollen-pistil interaction in Petunia hybrida Hort. II. Localization of Ca2 ions and Ca2 -ATPase in unpollinated pistil

75%

Bednarska E., Butowt R.

Folia Histochemica et Cytobiologica

|

1995

|

tom 33

|

nr 1

19

Interaction of cadmium and cernitins on the activity of ATPases. II. The influence of cernitin GBX on the cadmium inhibition of ATPases

63%

Mekail A., Howaniec M., Cieslar A.

Acta Biologica Silesiana

|

1988

|

tom 08

20

Interaction of cadmium and cernitins on the activity of ATPases. III. The influence of cernitins T-60 and GBX on the cadmium inhibition of ATPases

63%

Howaniec M., Mekail A., Cieslar A.

Acta Biologica Silesiana

|

1988

|

tom 08

Ograniczanie wyników

Molecular architecture of the fusicoccin receptor

14-3-3 protein interacts directly with the C-terminal region of the plant plasma membrane H -ATPase

Activity of ATPases during dormancy breaking in Norway maple [Acer platanoides L.] seeds

Equivalent circuit for Na, K - ATPase

Cucumber HMA5A and HMA5B are two tonoplast-localized homologs of Arabidopsis thaliana heavy metal ATPase HMA5 involved in cellular heavy metal homeostasis

Effect of camel milk on the activities of ATPases in normal and streptozotocin-diabetic rats

Rat brain Ca2plus - ATPase is a substrate for protein phosphatases PP1 and PP2A

Endogenous oscillations of the transcript amounts of subunit-c of the V-ATPase of Mesembryanthemum crystallinum with harmonic frequency resonances under continuous illumination

Localization of calcium-dependent ATPase in germinating pollen grain and pollen tube in Vicia faba